Carbureter.



` E. KNAuss GARBURUER. Avrucmou'msu :un: 1s. ms. afkzwso :une 9v, me. -V

4 1,212,505. Panamanian-16, 1917.

2 SHEETS-SHEET 2,

llfwlwm t may concern:

automobile engines,

viewof a carbureter made in accordance with this invention; Fig. 2 is a sectional view taken on the line 2"-2 of.'

"1 indicateslan'y suitable container `Iene, kerosene, etc., provided with -a iloat or -other .controller 2, coacting with the pivoted UNITED sirArEs iui'rnirr Vomaisn. 1

.EDWARD KNAUss,' or

MOUNT VERNON, NEW Your., essIG'Non, :eYfDinEo'i AND MESNE ASSIGNMENTS, To :ri-IE K. r. MANUFACTURING coivirANY, iNo., or NEW YORK, N. Y.,

' AComon'AfrIoN or NEW Yoan.

Specification of Letters Patent.

cnaiaunn'riin.

Pateiifeaaan. 1c, 1917.

Application ledflune i6, 1915, SerialiNo. 34,502. lRenewed June.9,1916. SerialNo'. 102,791.

Be i known thaty I, EDWARD KNAUss, a

Mount lVernon, in the county of Vtfestchester a-'nd State o 'New York, tain new and useful Improvements in Carbureters; and I do hereby declare the, followingto be a full, clear, and exact description of the invention, such as fwill enable others skilled-in the art to which it appertainsto make and use the same.

This inventionrelates to carbureters especially adapted for use in connection with *and has for its object'to provide an apparatus' oi'- this nature which' will be simple in construction, inexpensive to manufacture, and which will be more eliicient'in usethan thosehereto-V fore proposed.

With these and other objects' in viev.,`the

invention. consists inthe novel details of con.- -struction and combinations ci parts. more fully hereinafter disclosed, and particularly pointedout in the claims.

.Referring to the accompanying drawings, Vforming a 'parti of this specification, in which "likenumerals designate like parts in all thel views, Figure l is a diagrammatic sectional and its associated parts.

Fig- 1,'

grows; Fig-f Sfis a detached perspective`view 'cf-theVenturi tubeor air regulator.; and

Ll is a partly' sectional view of a slightly Vmodified form of the apparatus.

Fig.

ing an annularchamber 10 adjustable-as to `its dimensions between its' ,outer wall and the inner walls of the pipe 7 and nozzle 8.

lJoined to the air -nozzle 9 is the screw threaded coupling member 11, adapted to -adjust up -and' ioin'ed to said coupling member is the e-'ir have invented cer-"i Inside the pipe or nozzle. 7 and preferably extendingup Vinto the inwardly tapering nozzle' end 8 is the 'inwardly' tapered end oi air nozzle 9, leav K4pipe '12, leading to the chamber v13, pro

citizen of the United States, 'residing 'at shown, andl provided with .the usual throttle comparatively for gaso-j y 4 the niemberz), oi' the Venturi tube or regu- .l l( is an exhaust `pipe or connection leadupwardly' vflaring inner surface 2l normally nozzle 7.'

Vspace 3l. withthe spacel or exhausted chanr latorQO is raised. The lower through the slots and connect the-two rings 39and4r0` f vided with the check valve 11i; and `ioined to the hand operated or other pump l5 conveniently located on the dashboard '16.

ing to the inlet manifoldoiil the engine, not 50' or other v-alv'elS." Inside the .pipe 17 and surrounding the nozzle 7, is the regulator or Venturr- -tube 20', provided with the P c5 mainly-located above .the nozzle l, and provided-with the reversely or downwardly fiar ing suri'ace 22 normally surrounding said.

Q@ represents the annular inwardly projecting snriace-constituti-ng the juncture between the said oppositely ared. surface 2l and 22, whicliserves to restrict the annular lspace 24` between the surface 22, and the' outer surface ofthe nozzle 7. `f rhe said space .24E opens into' the chamber 25, with which the carburcter support 26 is provided, and

`connected with said chamber-' z5-is the flue n f.. 5 i l or pipe 2l leading to or near the exhaust pipe orto anyconvenien't 'point for supplying heated 'air to said'chamber A valve 28 controls the liue27.

between -it- A plurality 8'5 self and the inner member-82.

.of .p'eiorations 3%, are provided in theconnection 3ft between thetwo membersv 30 and 32, and said perforatioiis thus connect said 90 bei 85 in the pipe .17.. 'The lower end of later 2O is provided with a plural-ity of notched members 3G having the u'nvaidly converging spaces 37 between them, and the regulating ring 3,9 surrounds said lower end oi' the member 32 as shown. Upon' this ring rests the loweredge of the member 30, so that' when the ringpis raised the whole regu- .end of the tube '10.0 17 vis screw threaded.l andslotted -as shown, r and fitting 4-saicl screw threads is the eX- ternal ring 40, while the vpins 4l pass- 10b -As shown in the drawings vthe outer ring 'Q0 'is internal-ly` slotted land the outer ends' of the pins 41 ;{itfor terminate at' thebot threads withyivhich the lower end of the tube 17 is provided, and at the same time raisev and lower the pins 41 and innerv ring 39. The pins 41 are conveniently located in their operative positionsby boring holes, not shown, radially-through the outer ring 40, slipping said plugging the holes.

4The operation of the carburetor is l as follows: The valve 4 and loa't 2 is so regulated as to maintain a supply of oil, or gasolene, at or near the upper end ot the adjustable air nozzle 9, the vsame being in the form of athin film occupying the adjustable annular spaceror chamber 10 between the nozzles. Air-being-rnow forced, or sucked through the nozzle 9, a vacuum will be cre` ated, above said-thin film and the latter will be drawn in al finely divided condition up through the converging portion 8 of the nozzle 7, and then suddenly expanded in the space 90 formed by the -liar-ing portion 21 of the regulator 20. When said'space 90 innozzle 20 is reaehed,'the finely divided and expanding mixture of air and oil is sub# j'ecte'dto the lannular film of -Warm airpassing or sucked vthrough pipe 27, chamber 25, space 9.4, ypast the constricting surface Q3, and' into said flaringfspace 90 inthe upper end of regulator 20. This last named .film

or jet of air 'still-further finely divides thel .oil or gasolene mixture before it leaves said regulator Q0, andl enters the pipe 17. When this last named pipe is reached, the regulator'ivill have been slightly raised from its seat on-th'e ring 39,'since it 1s slidingly fitted in the exhaust pipe'or tube 17 and the V shaped spaces 37 will. have uncovered or have risen above said ring 39, thusadmitting a `greater or less quantity of air into' the space. 31, which Will pass out of the holes 33 into said pipe 17, and still further aid in snbdividing said oil or `afasolenc. The outer surface of the upper end of 'nozzle A'l' is inwardly ltapered as showin so that as the restricting surface '23 rises, the volume lof air passing4 the saine greatly increases, and

consequently the-'presslneof the air on the regulator Q0 that is sucked through the openings 33 decreases. That is to say, the pressure on the surface 93 is first a maximum so that the regulator Q0 ujill rapidly rise to admit more air to the exhaust pipe 17. But

as .soon as the surface Q53 separates from thc outer tapered surface of the nozzle S this pressure rapidly falls, 'while the passage of air through the notches 37 into the annular chamber 31 and through the pcrforations 33,

tends to keep the regulator 20 lifted until the passage between the surface :'23 and outer surface of the nozzleS becomes so tgreat that vsaid regulator 20 will fai lbygravlty, 'oe

pins into place and then again lifted by the combined pressures acting upon it. AIn other words the' regulator 20 will rise and fall automatically th'u's causing-a. regulated'quantit of air vto pass into the fuel mixture, Whici quantity Will increase and decrease with the vaeuumin pipe 17, or with the speed of the motor, and thereby insure the proper` amount of oxygen at all times.

In order to regulate the 'minimum 'supply of air through the carbnreter, the ring 40 may be screwed up or down, 'thereby varying the position of the restricting surface Q3 as Well as of the V shaped spaces 37.

Under ordinary conditions of running,

the vacnum'in Twipe 17 Will be sutlicient 'to' lsuck air through the nozzle 9 and past the valvel 1l, but this` valve may be adjusted to permit this only aftera certain speed is reached, and if so desired.

An important feature ofthe invention resides inf-the ability of priming `the engine by forcmgair, by means of the pump l5,

through nozzle 9, and thereby filling the pipe 17 vwith a fuel mixture when the lengine is not running.

6() represents 'an adjustable stop for limiting the 'upward movement of the regulator 20. and (il `friction material 'for preventing fluttering of the regulator 20.

In the modified form ofthe invention shown in Fig. l, the same parts arelettered with the saine numerals but the flue or pipe '27. the support 26 of the carbureter and the Venturi tube or regulator 520 are somewhat changed. That is to say the support 'for the carburetor is shaped as shown, the flue 2T and `valve 2S are raised 4somewhat and the' lenturi tube 'or regulatorl 66 1s providedv with the perforated ring member 67 having the orifices GS, so that whe'n the said regulator descends more or Yless fair -is'trap ed in the chamber 69, formed byv'the `said ring 67 and thet'urned in Yend 70 'of the'exha'ust tube 1T.

Instead of regulating the `flow of 'air n's disclosed ni connection with Figl- 1, 'the tube 17.1s4 made adjustablerelatively'tothe supporting member' by 'meansof'ethe rack Tl and pinion 72,"and :the 'said'tnbe'yl' 'is".

provided with a plurality ofjorifices 73 'ar ranged in a spiral p'a'th as'sbownandwhich are adapted to be uncovered one at a time by the upper perforated ring 'member T-l of the regulator (i6. The said regulator 66 in thisl form of the invention is not provided i'vith the V shaped orifices 37, butthe` lowerend 75 of said regnlatoris cylindrical in shape and the nir from'the tine 27 passes up through the space 24 Without being able to yesca'pe"tbrou`2;h the orices B3.' On 'the other hand, another portion of"air is sucked through the' orifices 73into the space 77 between `the rings/67,'1i-M174 'when the 'Suid regula-tort@ rises. v'

' a very 4thorough mixturev with airis had,

whichis further enhanced b'yother .air jets nected with said supply land adapted to hold..

a thin lm of fuel'between them; Saidouter i nozzle having an outer tapered surface;.anexhaust pipe in which said. nozzles are. 3 located; a slidable automatic regulator pro-l :vided 'with a" restricting surface surroundmotor can be' rea ily -stagrtedA in zero `weather. i It is obvious that those skilled. in the art.

I 4 It will thus be seen in both forms of the ,Invention as the pistons of the-'motor are I`operated, a vacuum will be formedjin the tity of gasolene -sup-plied from' the container 1. under atmospheric pressure. It will also be observed that the gasolene isl fed in a thin hollow circularfilm, which surrounds a. cylindrical jet of air, and that therefore a very line'subdivisio'n of the gasolene and at a high velocity. y

It will likewise be seen that by using theI hand pump l5 for 'riming purposes, the

'may vary the 4details 'of .construction aswell as the arrangement of parts withoutdepart- 'ing from the spiritof "my invention and therefore, I do not wish' to be limited vto the above disclosure, quired "by the claims.

Whatl I claim is them, said outer nozzle being outwardly tapered; connections between s a-idsupply and V sa'id'an-nula'r space; hand operatedl means adapted. to be located onthe dash-` board of a vehicle to cause ,air vto pass through said inner 'nozzle and to suck fuel out' of'said space; a second air 'supply; an d i adjustable sliding automatic means Lrefl versely' tapered on it`s.inside surroundingA said outwardly tapered nozzle for c ontrolling said. second supply, substantially as.

described.

2, In a carbureter the combination of a fuel supply; inner and outer concentric nozzles .providing an, annular' space betweenthem; connections between (said supply .and

said .annular space; an automatic regulator provided with inner' andouter. walls spaced apart'to pro-vide an annular space between them open at its bottoni, and with a chamber surrounding the delivery ends of said noz?` zles formi-ng ,an `annular" passage outside .of

said. outer nozzle; means .to4 cause air to pass through said inner'nozzle and annular passage and to s'uclr fuel out of said'spacemeans for' adjusting saidregulator to vary said passage, and means to permitf'air to enter saidis'eeond named annular space sub- `stantiall'y as described.

In aearbureter the combination of a 'except as. may be rezleshaving a space between them; a confuel supply; inner and outer .concentric noz# ne'ction betwen said 'space and 'said supply; .i

an exhaustpipe in'which said nozzles are located and. an automatic .regulator in `said exhaust pipe surrounding' said nozzles 'and later provided with en ,.annular chamber 4slidingly movable in'said pipe, said -reguand a plurality ofperforati'ons leading to' tially as described.

' 4. -Inl a carburetergthe combinati-empf. a

fuel supply; innerand outer .nozzles coi"1- -ing said! nozzlesand located infsaid exhaust pipe; an air supply connected 'to said regulator; andan additional .air supplyl connected tojsaid inner.nozzle,fsubstantially as described.

l5.l In a. carbureter'the combination 'o f a.l

l fuel supply; inner and outer nozzles lconnected with saidsupply and adapted to hold a thin film of fuel between them; said outer nozzle having an vouterta'pered sursol face; an exhaust pipe in which said nozzles. are located; a slidable automatic regulator having 4upwardly and downwardly flaring inner surfaces, said re ulatoralso provided 'jiiith a restricting .sur ace surrounding said nozzles and locatedV in lsaid exhaust pipe;

...an air. supply` connected to said regulator;

an' additional air supply connected to said inner nozzle andv means to adjust said re'gulator upl and down to predetermined posi?.

tions substantially as described.

6. In a carbure'ter he combinationof fuel supply; inner and 'outer nozzles con-A jnected with' saidl supplyand adapted tol holda thin film of fuel between them; an

exhaust pipe vin which said nozzles are 'located;.a slidable'regulator rovided with .'fzles and located in'said exhaust pipe; means' for adjusting lsaid'- regulator .up and ldown to .predetermined positions; an air supply iis" i'iozzle; substantially as described.

.In vtestimony whereof-I aflix my ,signature, in presence of two witnesses. EDWARD KNAUSS.

Witnesses: l

. FREDERIC H. LAWRENCE,

C. Suzanna; 

